# Simple Statistics: Probability for Standard Normal Random Variable

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6.3. Find the following probabilities for the standard normal random variable z: {see attachment}

6.7. Find a Zo that has area .9505 to its left.

Find a Zo that has area .05 to its left.

https://brainmass.com/statistics/probability/simple-statistics-probability-for-standard-normal-random-variable-36624

#### Solution Preview

6.3 Find the following probabilities for the standard normal random variable z:

a) P (-1.43 <Z<.68) = P (Z<.68)-P(Z<-1.43)

Since P(Z<-1.43) = P(Z>1.43)=1- P(Z<1.43)

Then P (-1.43 ...

#### Solution Summary

This solution is provided in approximately 129 words. It contains mainly equations for finding probabilities and Z scores.

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